Answer:
B) substrate-level phosphorylation
Explanation:
Fermentation and cell respiration are reactions of the organisms' energy metabolism, which aim to obtain energy for metabolic reactions from the breakdown of glucose into ATP (adenosine triphosphate).
In its phosphate bonds, ATP stores energy, which will be used in metabolism. This nucleotide(ATP) is the energy currency of the cell.
Substrate-level phosphorylation is a process that is part of the Krebs Cycle and glycolysis. It consists of the direct formation of ATP by the direct transfer of a phosphate group to ADP(adenosine diphosphate), coming from another phosphorylated molecule.
During glycolysis, substrate-level phosphorylation produces four ATP molecules, while in the Krebs cycle, it produces two molecules.
